JPH038803A - Production of uniform conjugate raw silk yarn - Google Patents

Abstract

PURPOSE:To raise bundling of cocoon and core yarn, to improve uniformity and to obtain smooth yarn by bundling cocoon yarn around core yarn comprising yarn except cocoon yarn, winding the bundled yarn at high speed and drying the yarn from the periphery of a small frame with hot air. CONSTITUTION:Cocoon yarn 22 is bundled around core yarn 16 comprising yarn except cocoon yarn, wound through a kennel 3 on a small frame 11 at >=330m/minute and provided with >=17g/20d reeling yarn tension. The wound yarn is dried by hot air at >=50 deg.C form drying pipes 12 and fans 13 attached to the upper, the side and the lower parts of the small frame 11. By improving uniformity, cocoon yarn will be hardly separated from core yarn, the conjugate yarn becomes straight and glasses-like nodes will not occur.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method for producing composite aligned raw silk in which cocoon threads are bundled around a core thread made of threads other than cocoon threads. (Prior technology) A yarn feeding tube for the core yarn is installed under the rotary splicer of the automatic @Itokon.
The core thread pulled out from the core thread cone is inserted into a rotary splicing device, and the cocoon thread that has been picked up from the grain side is wrapped around the core thread and pulled out in a stretched state.Then, the thread is passed through a kennel and its fineness is detected. This method is generally called a composite conjugation method, in which the material is oiled and rolled into a small frame. There is a method of string manipulation. The form of the composite conjugated yarn 50 obtained by this method is as follows:
It is fine as long as the cocoon thread 52 covers the threads neatly, but if the core thread 51 is a thread other than cocoon, in reality, the cocoon threads 52 are easily joined together with sericin, and the cocoon thread 52 and the core thread 51 are partially sericin. It is simply joined by. Therefore, the cocoon threads 51 and the core threads 52 are easily separated, and the cocoon threads are not joined together over a long section. As a result, glasses-like peeling often occurs, especially when flipping. Therefore, in order to reel a composite yarn with even better entanglement than the above-mentioned composite conjugation method, a composite entanglement method was developed in which cocoon yarn is entangled around a core yarn made of yarn other than cocoons using an air jet nozzle installed at the top of the thread tube. It was done. The composite interlaced yarn 60 thus produced is passed through a kennel, oiled through a fineness sensing hole, and wound into a small frame. The composite entangled yarn 60 reeled by the composite entangled method is the core yarn 6
The entanglement of the cocoon thread 62 with 1 is good, and since the cocoon thread 62 is wound around the area where the core thread is stretched, it has stretchability, and the knitted fabric using the thread has stretchability.
Excellent fit. However, the half-faced cocoon thread 62 and other fibers 61 are easy to separate, especially when they are dried on the reel and then re-lifted. The resulting cocoon thread 62 and the core thread 61 are likely to separate, and the smoothness will be poor.

[Problems that Komei tries to solve]

In view of the above points, Honkomei is designed to prevent separation between the core thread other than the cocoon fiber and the cocoon thread wrapped around it.
The purpose of this study is to obtain a composite main system with no spectacle-like nodes.

[Means for solving the problem] In a silk reeling method in which cocoon silk is gathered around a core thread made of thread other than cocoons, passed through a kennel, and wound into a small frame, the silk is wound at a reeling speed of 330 m/a high speed on a preparative basis. By applying a reeling tension of 17 g/20 d or more and drying the small frame by blowing hot air at 50° C. or higher from around the small frame, the cocoon threads and core threads were bundled and the pulling property was improved. EXAMPLE] The yarn reeling method of the present invention will be described below along with drawings of an apparatus for carrying out the method. In the illustrated device, a grafting device 2 is placed above the anterior portion 1. Drum wheel 4.9A degree sensing for configuring Kennel 3 is 5. Drum wheel 6. Swinging arm 8 with drum wheel 7 at the tip, intertwining 9. It has an oiling roller 10, a small frame 11 is provided at the top,
A drying pipe 12 and a fan 13 are provided around the small frame 11, and hot air is applied to the small frame 11 by rotation of the fan 13 to dry the threads trapped in the small frame 11. drying pipe 12
A cover 14 is provided around the . When a yarn failure occurs and the tension of the yarn increases, the swinging arm 8 raises its tip and stops the rotation of the small frame 11 by a mechanism (not shown).
The length of the frame 11 is increased, the material is made lighter, and the small frame 11 can be immediately stopped by instantaneously generated thread tension, thereby preventing thread breakage. A cocoon feeder 15 circulates in front of the reeling section 1 and weaves the cocoons in the welding device 2. A core yarn 16 made of fibers other than cocoons is supported by a frame 18 in the form of a cheese 17, and is guided from below the welder 2 to the center of the grain attachment 20 by a yarn guide tube 19. The boiled and ripened cocoons 21 in the cocoon feeder 15 are welded to the welder 2 and simultaneously enter the reeling section 1, where they are fried into an appropriate number of grains, preferably 4 to 5 grains. On the other hand, the core yarn 16 made of fibers other than the cocoon yarn wound around the corn or cheese 17 passes through the yarn guide tube 19 and enters the center of the grain attachment 20 from below the welding device 2, and is sent out together with the cocoon yarn 22. The cocoon thread 22 wraps around the core thread 16 and does not cover it, making it a 20d composite thread at a reeling speed rf.
Wind up at a high speed of 330 m/min or more. At this time, the reeling tension becomes 17q/20d or more. When the cocoon is spliced from the cocoon feeder 15 to the splicing device 2 for the above-mentioned high-speed reeling, the interval until the next splicing is shortened to about 2.0 seconds,
Efforts are being made to prevent the occurrence of thread spots. The thread wrapped around the small frame is the top and side of the small frame. Drying pipe 12 provided at the bottom. Then, the fan 13 blows hot air of 50 degrees C or higher to dry it. The reason why the hot air blown onto the small frame is set at 50 degrees Celsius or higher is because the reeling speed is high; if the temperature is lower than this temperature, the yarn that has been drawn up and wound around the small frame cannot be sufficiently dried. It disappears. In the method of the present invention, since the yarn 25 is pulled up at a high speed as described above, the tension of the reeled yarn 25 increases during reeling, and the reeling tension becomes 17 g/20 d or more, and the cocoon yarn and the cocoon yarn and core The threads are tightly bound together, resulting in a straight shape with good bow alignment. For this reason, separation of the cocoon thread and core thread is difficult to occur, and the formation of loops such as spectacle-shaped ring nodes is suppressed, and adjacent cocoon threads are brought into contact with each other in a state where they are aligned.
As shown in Fig. 2, the bonding by sericin is sufficiently performed.
The joined band-shaped portion 26 is twisted with the broken yarn 16 in a state where it wraps the filament yarn 27 constituting the broken yarn 26. In the present invention, the reeling tension is increased because the reeling medium yarn is wound at a high speed of 330 m/min or more. No knots occur,
Therefore, the thread becomes smooth. Tables 1 and 2 show the occurrence of large, medium, and small knots during reeling depending on the reeling speed. As a result, it is clear that when the yarn is reeled at a high speed of 330 n/min or higher, the occurrence of large, medium, and small knots can be extremely reduced. Margin below

【Effect of the invention】

The method of the present invention is a reeling method in which cocoon yarn is gathered around a core yarn made of yarn other than cocoons, passed through a kennel, and wound into a small frame. Apply a tension of 17 g/20 d or more,
By blowing hot air of 50°C or higher from around the small frame to dry the small frame, the cocoon threads and core threads are bundled together and pulled together better, so the cocoon threads and the cocoon threads and core threads are tightly bound together and pulled together. It has good alignment and a straight shape. For that purposeiii
Separation of the yarn and core yarn was less likely to occur, and a smooth yarn could be obtained without the occurrence of eyeglass-like knots.

[Brief explanation of the drawing]

Fig. 1 is a side view of an apparatus for carrying out the method of the present invention, Fig. 2 is a front view of a thread produced by the method of the present invention, Fig. 3 is a front view of a composite base metal thread, and Fig. 4 is a front view of a composite interlaced thread. It is. 3...Kennel, 11...Small frame. 16... Core thread, 22... Cocoon thread

Claims (1)

[Claims] 1. Gather cocoon threads around a core thread made of threads other than cocoon threads,
In the reeling method of winding the yarn into a small frame through a kennel, by reeling at a high speed of 330 m/min or more,
By applying a reeling tension of 17 g/20 d or more and drying the small frame by blowing hot air of 50°C or higher from around the small frame, the cocoon thread and core thread are bundled together and the cocoon threads are drawn well. Manufacturing method of composite drawn raw silk.